Respiration and The Upper Respiratory Tract

What is respiration?

• All parts of the process that supplies body cells with oxygen and gets rid of carbon dioxide.

• The process of breaking down food into smaller pieces in the stomach.

• The movement of blood through the heart and blood vessels.

• The process of absorbing nutrients from food in the intestines.

What are the bones in the nostrils called that increase the surface area of air passing?

• Turbinates

• Mandible

• Clavicle

• Scapula

What is the function of the epithelial lining of the nostrils and turbinate bones?

• They are supplied with capillaries which are used to warm air coming through your nostrils, and increase humidity.

• They filter out carbon dioxide from the air before it enters the lungs.

• They produce digestive enzymes to break down food particles in the air.

• They secrete hormones that regulate breathing rate.

Why is it better to breathe through your nostrils than your mouth?

• Because the air is warmer and the cilia filter the air more thoroughly.

• Because it makes your voice louder.

• Because it uses less energy.

• Because it helps you taste food better.

What is the function of the pharynx?

• The canal that connects the nose to the mouth, and connects to the esophagus and trachea.

• It produces digestive enzymes for the stomach.

• It filters oxygen from the air before it enters the lungs.

• It pumps blood throughout the body.

What is the glottis?

• The opening of the trachea which conducts air to the lungs (space between the vocal cords).

• A cartilage that covers the windpipe during swallowing.

• The tube that connects the throat to the stomach.

• The muscular wall separating the chest cavity from the abdominal cavity.

What is the function of the epiglottis?

• A flap like structure that prevents food from entering the trachea thereby protecting the glottis (prevents choking).

• It produces digestive enzymes to break down food in the stomach.

• It filters oxygen from the air before it enters the lungs.

• It absorbs nutrients from digested food in the small intestine.

What is the larynx also known as?

• The voice box.

• The windpipe.

• The food pipe.

• The nasal cavity.

What happens to the vocal cords when you prepare to speak?

• The vocal cord muscles contract and bring the vocal cords together.

• The vocal cords relax and move apart.

• The vocal cords become rigid and do not move.

• The vocal cords vibrate rapidly without coming together.

What is the trachea also called?

• The windpipe.

• The food pipe.

• The voice box.

• The esophagus.